David b



" 'DA'vID Seien-for" Specificationforming'prt of To all wlom t'trmay cace'rnf:

ing-arm and. sliding shaft,` and the umanneriof vshitting the traversinfgvpulleys iliya cylindri cal washer, so'combined as to bring lthe l whole ofthe action governingth-erakes above'their hinged lconnection lbelow the camway, andv that while the rakes can/ be adjusted to adapt them to the standing grain for gathering the desired size of a sheaf in thin spots, theaction of the automatic adjustment is readilyfshifted, so that the rake perfornisthe ettice of ayblind at the option of the driver with ease.

The drawings illustrate thc construction.

Figure l is a perspective view of all the parts combined; A, the fixed camway B G, hinged switches ;,D, a fixed segment; E, the grooved chain-pulley F, the guide chain-pnlley on its supporting-armf; R, the rakes, with their two parted arms M N, the lower arm M hinged between lugs O, between the ange or cam A, and chainway E. arm is provided with a conic friction-Willey, Q, a cylindrical washer, P, secured by a headed bolt and nut, s. The whole is supported on a single column or stationary shaft, G. .This shaft is hollow for the reception of a sliding shaft, having an arm, H, projecting through an oblong slot below, which arm is provided with an eye for a cord, J, and rests against a spring, T.

Fig. 2 shows the parts ot' the rake, the arm M, with its eye for the bolt y to be secured between the lugs O. There is also a checklug, m, on the head to prevent the rake from falling over the desired position; S, the nut; P, the shifting-washer; Q, the conic pulley; Fig. 3, the hingedswitches, shown detached. B has an inclined plane and prolonged by a tongue, b, hinged behind horizontally to the raised portion a, of the fixed camway A, Fig. 4. This switch B has also a lug, rv, Fig. 5, on the inner side beneath, with an eye for the nger or connecting-arm U attached to the central sliding shaft V above. A vertically- ,encc give a clear ideaof theconstructi The upper rake.

placed,ntside-oftlie eyeoffthe arm The operationy is readily inferred, thatif either one or all the rakes are desired to sweep over or clean thel platform, it is only necessary to remove the burr S, change the washer P from the inner to the outer side of the eye in the upper arrn N of the rake-holder.

lt will be seen that by throwing the pulley Q out so as to traverse the outer edge of the cam A, they will pass under the switch B, which is always open when the spring T is below the arm H and the cord-pulley I, as shown in Fig. 1. It' it is preferable to have the switch B always down or closed, the pulley l can be inserted into the hole i, (shown in the collar of the arrn f,) fastened to the shaft G by a binding-screw, L, and the spiral or other kind ot' a spring, T, placed above the arm Hand the cord J, used in like manner, in the one case for opening and in the other for closing the switch B, so that it' either ot' the rakes set for clearing the platform are desired to act as a blind,- it is only necessary to operate the sliding shaft V H by a foot-lever or cord and pulley I J by hand to close the switch, when the pullev Q (set for the outer portion of the camway) will mount up the inclined plane brought down by its edge extending upon thc outer track, as the prolonged tongue b always comes in the track ot' the pulley1 set for the inner track when the switch is up. Thus, the drivel' can readily control the action of the rakes', and, however thin the grain may stand, it may remain undisturbed until the chilling the casting and giving tothe surface a steel-like hardness, and greatly increasing the durabilityof the same.

I am not aware thaty the chilling `was ever before used forV that purpose. I am aware, however, that car-wheels and plowshares are so chilled. I amV aware, also, that camways are made of various forms, and that a hin ged switch, differing substantially in construction and oice, is also used on automatic rakes for Vharvesters; but I am notaware that a single hollow shaft for a slidingwspring-shaft was ever before used to actuate aswitch, nor double-armed rake-holders, provided with adjustable'fwashers for changing the action of conic pulleys;no`r the use of a vertical loosely hinged switch, operating as set forth, besides minor parts which are deemed new and useful, to govern and regulate the action of the rakeor blind motion withease and certainty;

`nor amI aware of any raking attachment o, harvesters in which all the cams and rakev motion are produced above the connection of the fakes.

What I claim as my invention, and desire to secure by Letters Patent, is'

1. The arrangement of the two-armedfrakeholder M N, one arm hinged between the lugs O and the other arm free, when said arm is perforated for a headed bolt and provided with an adjustable cylindrical piece or washer, P, and conic pulley Q, in the manner and for the purpose shown and specified.

2. In combination with the adjustable washer and pulley 1: Q, the arrangement of the horizontally-hin ged switchB, vertically-swinging switch c, fixed segmental cam D, in combination with the main camway A for governing the motion of the rakes or blinds, in the manner and for the purpose set forth.

3. In combination with the switch B and its` prolonged tongue b and lug 11:, the arrangement of the connecting-arm U, sliding shaft V, with the projection H for operating the switch B at pleasure, in the manner and for the purpose described. p Y y 4. The combined arrangement of thecamway'` A with its segment D, switches B C, lugs o, and grooved chainway E, adjustable chain guide-pulley F, when all are supported on a single' shaft or column, G, which is slotted and perforated for a central shaft,V, in the manner andfor the purpose set forth.

` DAVID B. sHIRK.`

Witnesses WM. B. WILEY, JACOB STAUFFER. 

